An enzyme called tyrosinase is needed to create melanin (the pigment that causes the brown spots) and while several other skin lightening agents work to inhibit the synthesis of tyrosinase itself (like vitamin C or licorice), arbutin lets tyrosinase be and rather hinders the melanin-forming activity of the enzyme
You can safely incorporate it into your daily regimen if there is no irritation or allergic response
The answer depends heavily on what you're trying to achieve
In addition, it has been observed that MTX can increase intestinal permeability which has been linked to hepatic inflammation, abnormal liver histological changes such as fibrosis, cirrhosis, and apoptosis of liver cells, and higher levels of hepatic transaminases (Cao et al
Niketa for my hair and skin issues
Administration of Bifidobacterium breve improves the brain function of A1-42-treated mice via the modulation of the gut microbiome